switch from crypt() to password_hash() and password_verify(), thx to kapsonfire for the hint

Signed-off-by: Michael Kaufmann <d00p@froxlor.org>

install/froxlor.sql

@@ -609,7 +609,7 @@ opcache.validate_timestamps'),
 	('system', 'apache24', '1'),
 	('system', 'apache24_ocsp_cache_path', 'shmcb:/var/run/apache2/ocsp-stapling.cache(131072)'),
 	('system', 'documentroot_use_default_value', '0'),
-	('system', 'passwordcryptfunc', '3'),
+	('system', 'passwordcryptfunc', '2y'),
 	('system', 'axfrservers', ''),
 	('system', 'powerdns_mode', 'Native'),
 	('system', 'customer_ssl_path', '/etc/ssl/froxlor-custom/'),